23 Results
Filters 11
Popularity Product Name Mfg. Part Number Order Number

SPST/Manual Reset, SPST, SPNO-SPNC, SPNO, Solid State, Open-on-Fall, DPST/SPST, DPST, Analog Out, Resideo, Johnson Controls

Remote Bulb Temperature Control L38-684
Remote Bulb Temperature Control
Sensing Element: 6' Remote (3/8" x 4"); Temp. Range: -30°F to +100°F; Switch Action: SPST; Diff.: 3° to 12°;
Brand: Johnson Controls Mfg #: A19ABA-40C
Catalog Pg.: 1293 View Similar Items
Hydronic Switching Relay L36-919
Hydronic Switching Relay
Switch Action: DPST; Volts: 120; F/L Amps @ 120V: 7.4; L/R Amps @ 120V: 44.4; F/L Amps @ 240V: 3.7; L/R Amps @ 240V: 22.2;
Brand: Resideo Mfg #: RA832A1066
Catalog Pg.: 535 View Similar Items
Hydronic Switching Relay L36-918
Hydronic Switching Relay
Switch Action: SPST; Volts: 120; F/L Amps @ 120V: 10.2; L/R Amps @ 120V: 61.2; F/L Amps @ 240V: 5.1; L/R Amps @ 240V: 30.6;
Brand: Resideo Mfg #: RA89A1074
Catalog Pg.: 535 View Similar Items
Universal Switching Relay L38-870
Universal Switching Relay
Switch Action: SPST; Volts: 120; F/L Amps @ 120V: 7.4; L/R Amps @ 120V: 44.4;
Brand: Resideo Mfg #: R8845U1003
Catalog Pg.: 535 View Similar Items
Hydronic Switching Relay L37-916
Hydronic Switching Relay
Switch Action: DPST/SPST; Volts: 120; F/L Amps @ 120V: 7.4; L/R Amps @ 120V: 44.4; F/L Amps @ 240V: 3.7; L/R Amps @ 240V: 22.2;
Brand: Resideo Mfg #: R845A1030
Catalog Pg.: 535 View Similar Items
Low Temperature Cut-Out (Freeze-Stat) B13-348
Low Temperature Cut-Out (Freeze-Stat)
Switch Action: SPST; Diff.: Manual Reset;
Brand: Johnson Controls Mfg #: A11A-1C
Catalog Pg.: 1302 View Similar Items
Line Voltage Thermostat L39-739
Line Voltage Thermostat
Switch Action: DPST; Color: Premier White;
Brand: Resideo Mfg #: T4398B1029
Catalog Pg.: 315 View Similar Items
Line Voltage Thermostat L39-738
Line Voltage Thermostat
Switch Action: SPST; Color: Premier White;
Brand: Resideo Mfg #: T4398A1021
Catalog Pg.: 315 View Similar Items
Low Temperature Cut-Out (Freeze-Stat) B13-650
Low Temperature Cut-Out (Freeze-Stat)
Switch Action: SPST; Diff.: 8°F;
Brand: Johnson Controls Mfg #: A11B-1C
Catalog Pg.: 1302 View Similar Items
Multiple Aquastat® Controller L39-942
Multiple Aquastat® Controller
Application: High/Low Limit; Switch Action: SPST; Diff.: 10°F (High); 10 to 25°F (Low);
Brand: Resideo Mfg #: L4081A1023
Catalog Pg.: 536 View Similar Items
Lube Oil Pressure Cutout Control L51-068
Lube Oil Pressure Cutout Control
Switch Action: SPST;
Brand: Johnson Controls Mfg #: P145NCB-12C
Catalog Pg.: 1305 View Similar Items
Remote Bulb Temperature Control L39-487
Remote Bulb Temperature Control
Sensing Element: 6' Remote; Temp. Range: 100°F to 240°F; Switch Action: SPST; Diff.: Manual Reset;
Brand: Johnson Controls Mfg #: A19ADB-1C
Catalog Pg.: 1293 View Similar Items
Electric Heating Relay L40-032
Electric Heating Relay
Coil Voltage: 24VAC; Switch Action: SPST;
Brand: Resideo Mfg #: R841E1068
Catalog Pg.: 399 View Similar Items
Remote Bulb Temperature Control L39-485
Remote Bulb Temperature Control
Sensing Element: 6' Remote; Temp. Range: -30°F to +100°F; Switch Action: SPST; Diff.: Manual Reset;
Brand: Johnson Controls Mfg #: A19ACA-14C
Catalog Pg.: 1293 View Similar Items
Remote Bulb Temperature Control L39-486
Remote Bulb Temperature Control
Sensing Element: 10' Remote; Temp. Range: -30°F to +100°F; Switch Action: SPST; Diff.: Manual Reset;
Brand: Johnson Controls Mfg #: A19ACA-15C
Catalog Pg.: 1293 View Similar Items
Multiple Aquastat® Controller L39-944
Multiple Aquastat® Controller
Application: High Limit and Circulator; Switch Action: SPST; Diff.: 10°F Fixed;
Brand: Resideo Mfg #: L4081B1096
Catalog Pg.: 536 View Similar Items
Low Volt Electronic Thermostat — Ambient and Floor Heating Electric (Ambient) Heating and Floor Heating L45-646
Low Volt Electronic Thermostat — Ambient and Floor Heating Electric (Ambient) Heating and Floor Heating
Switch Action: SPST; Color: White;
Brand: Resideo Mfg #: TH114-AF-024T
Catalog Pg.: 316 View Similar Items
P20 Series Air Conditioning Limit Control L36-926
P20 Series Air Conditioning Limit Control
Switch Action: Open-on-Fall; Pressure Range PSIG: 7 to 150; Diff. PSIG: Manual Reset; Max. Pressure: 250;
Brand: Johnson Controls Mfg #: P20BB-1
Catalog Pg.: 1318 View Similar Items
System 450™ Control and Expansion Module L45-648
System 450™ Control and Expansion Module
Description: Control Module 2 Analog; Switch Action: Analog Out;
Brand: Johnson Controls Mfg #: C450CQN-4C
Catalog Pg.: 1298 View Similar Items
System 450™ Control and Expansion Module L45-647
System 450™ Control and Expansion Module
Description: Control Module 1 Analog; Switch Action: Analog Out;
Brand: Johnson Controls Mfg #: C450CPN-4C
Catalog Pg.: 1298 View Similar Items
Cooling Tower or Evaporative Condenser Control L39-493
Cooling Tower or Evaporative Condenser Control
Switch Action: DPST; Range: 25°F to 90°F; Diff.: 4°F to 25°F;
Brand: Johnson Controls Mfg #: A72AE-1C
Catalog Pg.: 1302 View Similar Items
System 450™ Control and Expansion Module L45-652
System 450™ Control and Expansion Module
Description: Expansion Module 2 Analog; Switch Action: Analog Out;
Brand: Johnson Controls Mfg #: C450SPN-4C
Catalog Pg.: 1298 View Similar Items
System 450™ Control and Expansion Module L45-651
System 450™ Control and Expansion Module
Description: Expansion Module 1 Analog; Switch Action: Analog Out;
Brand: Johnson Controls Mfg #: C450SQN-4C
Catalog Pg.: 1298 View Similar Items
FTL Finance
Powered by Site Search powered by SLI Systems

© 2025 Johnstone Supply. All rights reserved.

Select products to compare.
Compare